Instead of investing in a grow box, invest in a bigger or at least taller tent.
You could do so much more with a 72"-80" tall tent.
The price of those boxes are quite expensive when compared to what you get when buying a tent and other components separately.
When I first started growing, I bought a $700 Stealth Box. 1st one arrived damage so I got a 2nd free, fixed the 1st one.
Yeah, they still grew bud but the yields weren't nearly enough to get me to the next harvest, even with having a 2nd box, and a big reason for growing is so you don't need to purchase anymore.
Now it's s $700 seedling box, plants stay in Stealth Box until transplant then in the tent.
For automation look at
AC Infinity kits or buy individual pieces.
AC Infinity Controller 69 can control your lights, temp, humidity, vpd, and even work with lots of non
AC Infinity equipment with the proper adapters.
They just released an AI controller that learns from it's environment to control equipment better automatically and gives the grower tips and insights.
You can make a simple drip irrigation system that doesn't break the bank that can be ran automatically with either the Controller 69 with UIS outlet or something like a wifi smart plug.
You will need to either ammend your soil with organic nutrients and use plain water in your reservoir or use synthetic nutrients in the water in the reservoir. Organic nutrients in the water will clog the drippers.